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What is the difference between a DC cooling fan and an AC cooling fan?

by:TOCH     2021-03-26
Our commonly used cooling fans are mainly DC cooling fans and AC cooling fans. Before choosing, perhaps we need to understand the difference between these two different cooling fans? The principle is different: the power supply of the AC cooling fan is AC, and the power supply voltage will alternate sinusoidally. However, the DC fan power supply voltage is fixed and must rely on circuit control to make the two sets of coils work in turn to generate different magnetic fields. The AC fan has a fixed power frequency, so the magnetic pole change speed generated by the silicon steel sheet is determined by the power frequency. The higher the frequency, the faster the magnetic field switching speed, and theoretically the faster the speed, just like the principle that the more the poles of the DC fan, the faster the speed. same. However, the frequency should not be too fast, too fast will cause difficulty in activation. DC fans are used on our computer radiators. Generally, a good cooling fan mainly examines the air volume, speed, noise, length of service life, and what type of fan blade bearing is used. The air volume is different: the cooling fan of the same size, because the AC fan motor is large in size, the fan blade is short while the DC fan is just the opposite, the fan blade is long and the motor is small, so the air flow per unit area is more, the air volume is larger, and the heat dissipation capacity Good materials are different: the outer frame of AC fan is generally aluminum frame, while the outer frame of DC fan is plastic frame. The ability to withstand high temperature is different, and the exchange is better. You are welcome to visit the cooling class and news center of the cooling fan manufacturer again. The copyright belongs to The cooling fan manufacturer owns it and only represents personal opinions. Please do not reprint the whole article. Any violation will be held for legal responsibility. If you need to know more about the cooling fan manufacturer’s products, please click Product Center
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